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[NSThread isMultiThreaded] always returns YES for my iPhone application, both in simulator and on the device, even if I run it first thing in applicationDidFinishLaunching:.
It this expected?
(I’m using Snow Leopard, if it makes a difference).
Totally normal. It’s almost always true for Mac apps as well, unless you create a command-line application that doesn’t use AppKit.
In particular, Core Animation, Core Audio, and possibly some other parts of Cocoa will spawn background threads on you behalf.